RO2188A Datasheet, PDF (1/2 Pages) RF Monolithics, Inc – 390.0 MHz SAW Resonator

®
• Ideal for 390.0 MHz Transmitters
• Very Low Series Resistance
• Quartz Stability
• Rugged, Hermetic, Surface Mount SM-2 Package
• Complies with Directive 2002/95/EC (RoHS)
The RO2188 is a true one-port, surface-acoustic-wave (SAW) resonator in SM-2 case. It provides reliable,
fundamental-mode, quartz frequency stabilization of fixed-frequency transmitters operating at 390.0 MHz.
RO2188A
390.0 MHz
SAW
Resonator
Absolute Maximum Ratings
Rating
CW RF Power Dissipation
DC Voltage Between Any Two Pins (Observe ESD Precautions)
Case Temperature
Soldering Temperature (10 seconds / 5 cycles max.)
Value
+5
±30
-40 to +85
260
Units
dBm
VDC
°C
°C
SM-2 Case
Electrical Characteristics
Characteristic
Center Frequency at +25 °C Absolute Frequency
Tolerance from 304.0 MHz
Insertion Loss
Quality Factor
Unloaded Q
50 Ω Loaded Q
Temperature Stability
Turnover Temperature
Turnover Frequency
Frequency Temperature Coefficient
Frequency Aging
Absolute Value during the First Year
DC Insulation Resistance between Any Two Terminals
RF Equivalent RLC Model Motional Resistance
Motional Inductance
Motional Capacitance
Pin 1 to Pin 2 Static Capacitance
Transducer Static Capacitance
Test Fixture Shunt Inductance
Lid Symbolization
Sym
f_C
∆f_C
IL
Q_U
Q_L
T_O
f_O
FTC
|fA|
R_M
L_M
C_M
C_O
C_P
L_TEST
Notes
2, 3, 4, 5
2, 5, 6
5, 6, 7
6, 7, 8
1
5
5, 7, 9
5, 6, 9
5, 6, 7, 9
2, 7
Minimum
389.900
Typical
0.9
12,000
1,200
27
42
f_C-5
0.037
≤10
1.0
11
54.963
3.0299
3.6
3.9
3.65
43
E319
Maximum
390.100
±100
2.0
Units
MHz
kHz
dB
57
°C
kHz
ppm/°C²
ppm/yr
MΩ
26
Ω
µH
fF
4.2
pF
pF
nH
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1. Lifetime (10 year) frequency aging.
parameters: f_C, IL, 3 dB bandwidth, f_C versus T_C, and C_O.
2.
The center frequency, f_C, is measured at the minimum insertion loss point,
8.
Turnover temperature, T_O, is the temperature of maximum (or turnover) fre-
IL_MIN, with the resonator in the 50 Ω test system (VSWR ≤ 1.2:1). The shunt
quency, f_O. The nominal frequency at any case temperature, T_C, may be cal-
inductance, L_TEST, is tuned for parallel resonance with C_O at f_C.
3. One or more of the following United States patents apply: 4,454,488 and
culated from: f = f_O [1 - FTC (T_O -T_C)²].
9. This equivalent RLC model approximates resonator performance near the
4,616,197.
4. Typically, equipment utilizing this device requires emissions testing and gov-
ernment approval, which is the responsibility of the equipment manufacturer.
5.
Unless noted otherwise, case temperature T_C = +25°C±2°C.
resonant frequency and is provided for reference only. The capacitance C_O is
the static (nonmotional) capacitance between the two terminals measured at
low frequency (10 MHz) with a capacitance meter. The measurement
includes parasitic capacitance with a floating case. Case parasitic capaci-
6. The design, manufacturing process, and specifications of this device are sub-
tance is approximately 0.25pF. Transducer parallel capacitance can be cal-
ject to change without notice.
7. Derived mathematically from one or more of the following directly measured
culated as: C_P ≈ C_O - 0.25pF.
RF Monolithics, Inc. Phone: [phone]
Fax: [phone]
RFM Europe
Phone: [phone]
Fax: [phone]
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
E-mail: [e-mail]
http://www.rfm.com
RO2188A-062001
Page 1 of 2